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Question
The gas that usually causes explosions in coal mines is

1 Hydrogen

2 Carbon monoxide

3 Air

4 Methane
 Question Submitted By :: Guest
I also faced this Question!!     Rank Answer Posted By  
 
  Re: The gas that usually causes explosions in coal mines is 1 Hydrogen 2 Carbon monoxide 3 Air 4 Methane
Answer
# 1
(4) Methane
 
Is This Answer Correct ?    1 Yes 0 No
Guest
 

 
 
 
Other General Science Interview Questions
 
  Question Asked @ Answers
 
A super conductor is characterized by 1 Zero permeability 2 Low permeability 3 High permeability 4 Infinite permeability  1
can any body tell diffirence between validation and qualification Ind-Swift-Laboratories2
The element nickel is a 1 Magnetic metal 2 Radioactive metal 3 Non magnetic metal 4 Complex element  1
the colour of a star is an indication of its?  1
What is the cytology ?  1
Which of the following is a protein? 1 Wool 2 Starch 3 Natural rubber 4 Cellulose  1
Which of the following is commonly called a ‘polyamide’? 1 Rayon 2 Orlon 3 Terylene 4 Nylon  1
Detergents used for cleaning clothes and utensils contain 1 Nitrates 2 Bicarbonates 3 Sulphonates 4 Bismutnates  1
The highest grade of coal whose surface is shining and has the highest calorific value, is 1 Bituminous 2 Lignite 3 Anthracite 4 Peat  1
When an iron nail gets rusted, iron oxide is formed 1 Without any change in the weight of the nail 2 With increase in the weight of the nail 3 With decrease in the weight of the nail 4 None of these  1
Which of the following is used to coagulate synthetic fibers from solution? 1 Hydrochloric acid 2 Sulphuric acid 3 Nitric acid 4 None of these  1
What is condensation? 1 Change of gas into solid 2 Change of solid into liquid 3 Change of vapour into liquid 4 Change of heat energy into cooling energy  1
What is the Metabolism ?  2
The main important feature of neutron bomb is that when it is dropped on a city, it would damage 1 Both the living organisms and buildings 2 The buildings but not the living organisms 3 The living organisms but spare buildings 4 None of these  1
Rubber is coagulated from latex by adding 1 Hydrochloric acid 2 Acetic acid 3 Sulphuric acid 4 Carbonic acid  1
The first synthetic fiber made by man was 1 Rayon 2 Nylon 3 Polyester 4 Terycott  1
The process by which an organic compound breaks down into simpler compounds on heating to high temperature is known as 1 Armatisation 2 Polymerization 3 Pyrolysis 4 Reduction  3
Deep blue color is imparted to glass by the presence of 1 Iron oxide 2 Cupric oxide 3 Nickel oxide 4 Cobalt oxide  1
The major ingredient of leather is 1 Carbohydrate 2 Collagen 3 Polymer 4 Nucleic acid  1
Glass is made of the mixture of 1 Quartz and mica 2 Sand and salt 3 Sand and silicates 4 None of these  2
 
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